E21B 7/132
From underwater buoyant support
Official title: from underwater buoyant support
E21B7/132 (From underwater buoyant support) appears on 16 US grants and 11 published applications in this corpus.
Search patents in E21B- Granted patents
- 16
- Published applications
- 11
- Assignees
- 10
- Inventors
- 21
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 3 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 2 | 3 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vehicle for installing anchors in an underwater substrate2 Jun 2026US 12,643,642 B2Other Lab, LLC
- Vehicle for installing anchors in an underwater substrate19 Nov 2024US 12,145,701 B2Other Lab, LLC
- Vehicle for installing anchors in an underwater substrate31 Jan 2023US 11,565,779 B2Other Lab, LLC
- System and method for subsea well operation15 Nov 2022US 11,499,379 B2Rigtec Wellservice AS
- Offshore well drilling system with nested drilling risers25 Jun 2019US 10,329,852 B2Cameron International Corporation
- Vehicle for installing anchors in an underwater substrate23 Jan 2025US 2025/0026460 A1Other Lab, LLC
- Vehicle for installing anchors in an underwater substrate13 Apr 2023US 2023/0116361 A1Other Lab, LLC
- System and method for subsea well operation19 May 2022US 2022/0154537 A1Rigtec Wellservice AS
- Vehicle for installing anchors in an underwater substrate29 Jul 2021US 2021/0229782 A1Other Lab, LLC
- Method and Apparatus for Drilling Multiple Subsea Wells From an Offshore Platform at a Single Site19 Oct 2017US 2017/0298694 A1Seahorse Equipment Corp
Most cited
By later US patents
- Floating/tensioned production system with caisson69US 4,913,238 AExxon Production Research Company · 1990
- Apparatus for multiple wells through a single caisson38US 4,068,729 AStandard Oil Company (Indiana) · 1978
- Deep draft drilling platform32US 4,502,551 A1985
- Submarine well drilling and geological exploration station16US 4,054,104 A1977
- Method and apparatus for drilling multiple subsea wells from an offshore platform at a single site10US 9,238,943 B2Seahorse Equipment Corp · 2016